ROUSH Performance's Phase 2 Supercharger system boosts performance to 727 horsepower for the Mustang Coyote V8, the ROUSH 2.3L Phase 2 Calibrated Supercharger System is part of the TVS (Twin Vortices Series) line of superchargers developed by ROUSH, raising the bar for performance and reliability. Eaton's TVS technology rotating assembly delivers more power and better fuel economy in a smaller package, and is part of the same line that has been used and proven for years in ROUSH-built Ford Mustangs. ROUSH Phase 2 system builds on the outstanding performance of our Phase 1 supercharger system, by adding proven core components and careful calibration for an additional 57 horsepower and 65 lb-ft of torque over our 670 hp/ 545 lb-ft system.